Japan vs jiujitsu

Japan and jiujitsu both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan	Yes	No	No	No
jiujitsu	Yes	No	No	No

Japan (noun)	jiujitsu (noun)
a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building	a method of self-defense without weapons that was developed in China and Japan; holds and blows are supplemented by clever use of the attacker's own weight and strength
a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean